Weighing scale



Oct. 9192a 1 A686 779 1 c. wr-:TzEL

WEIGHING SCALE Filed Feb. 25, 1924 UHll Patented Oct. 9, ,71928.

UNITED STATI-:s

1,686,779 PATENT OFFICE.

' LEWIS C. WE'IIZEL, OF WINDSOR, ONTARIO, CANADA, ASSIGNOR TO TOLEDO SCALE ICOMPANY, F TOLEDO, OHIO, A CORPORATION OF NEW JERSEY.

shown in section to more clearlyy delineate A IVEIGI-IING SCALE4 Application filed Februaryv25, 1924. Serial No. 694,887.

This invention V.relates to weighingy scales, and one of its principalobjects is to improve the means employed for. preventing the comymodity receiver' or .platform from tipping when 'a load is edges.-

y.Another object of my invention is to provide stabilizing means for scaleplatforms placed adjacent one of its v`which is adaptable for'use in scalesY having bled inthe scale and whichis capable of easy j removal for air. Y

Other-objects and advantages will be ap` parent from the, following description, in which reference islhad to the accompanying drawing illustratinga preferred embodiment of my invention and wherein similar reference numerals designate similar parts.

In the drawing: The ligure is a front elevational view of. a scale embodying my invention, parts being purposes of inspect-ion or re` the novel features of my invention.

The scale illustrated in the figure 1s of the well known automatic fan type having a base housing 1 upon whichk is mounted Cil an upright housing 2, the upper end of which is substantially fan shaped. In this particular type of scale the main or platform lever 3 is fulcrumed on suitable bearings within the base housing 1, the nose 5 of the lever 3 being connected by means of a fiexible metallic ribbon 6 to the power sector of the load-counterbalancing pendulum 8 which is provided with an indicating arm 9 that swings over a suitable chart 10 located in the fan-shaped portion of the upright housing 2.

YMounted upon the pivots 11 fixed in the lever 3 is a member 12 upon the upper eX- tremity of. which is fixed a spider 13 which in turn supportsa commodity receiver or vplatform 14. The member 12 is bored to provide clearance for astud 16 fixedlysecured to the spider 13, said -stud having a kerf or slot which receives one end of a link 17 loosely pivoted therein by means of a pintle 18. The other extremity of the link is pivoted by means of a pintle 20 to a bracket 19 fixed to an upwardly projecting portion ofthe base housing 1.

The vparts/are so proportioned and arranged that lines connecting the pivots 4 and 11l and pintles 18y and 2O respectively form a parallelogram. lVhen the load pivot 11 is swung aboutthe fulcrum pivot 4 the pintle 18 swings aboutthe pintle 20 tothe same extent and the platform is kept level throughout weighing movements of the scale. Vith the pivotal points 4, 1l, 18 and 20 in parallelogrammatic relation, the eiiect of a load on the automatic load-counterbalancing mechanism will not be affected by a.y

change in position of the load on the scale platform.

I have provided means for dampening the vibrations of the weighing mechanism con-` sisting of a dash pot 22, the plunger rod 23 being connected to Ythe member 12 for opera` tion therewith. A dust protecting member 24 inthe form of an inverted cup is positioned beneath the spider 13 and relatively movable thereto for purposes of adjusting the dash pot, the details of which, forming no part of my invention, will not be described.

The embodiment of my invention herein shown and described is to be regarded as illustrative only, and it is to be understood that the invention is susceptible to variation, modification and change within the spirit and scope of the subjoined claims.

Having described my invention, I claim:

1. In a device of the class described, in combination, a supporting frame, a lever fulcrumed on said supporting frame and having a load pivot, a. commodity receiver supported upon said load pivot, and a link positioned substantially above said lever and pivotally connecting said Vcommodity receiver with said frame, the axes of the pivotal connections between said link, the commodity receiver and frame and the load and fulcrum pivots being in parallelogrammatic relation and arranged so that said pivotal aXes lie in substantialiy vertical planes.

2. In a device of the class described, in combination, a frame, a lever fulcrumed on said frame and having a load pivot, a commodity receiver supported upon said load pivot, and a link positioned between the commodity receiver and'said lever and pivnections betweensaid link, the commodity J receiver and frame and the loadi and fulcrum pivots being in parallelogrammatic -relation. c

3. In a devicerof theo-lass -described,-,in. combination, a frame,a lever ulcrunied on said frame and having a load pivot, a comeY l modity receiver supported upon ksaid load pivot, and` a link positioned between the commodity receiver and said lever and pivotally connecting; saidV commodity receiverv VWith said frame, the-axesof the pivotal connections between said link, the commodity receiver and Aframe .andf the'load and fulfcrum pivots beingin parallelogrammatic re'-Y lation, said part'sbeing so arranged that said pivotal axes glie in substantiallyV vertical planes.`

Yil. In a devicev of the classdescribed, in

combination,` afbase housing, a lever ful; crumed therein and having a load pivot, a-

mernber mounted Von saidload pivot, a commodity-receiving platform supported by said member, and.A a linkv positioned between the lever and the'icommeditjv-receiving'platL form and pivotally connecting'Y saidmember with said base housing,the axes of the-pivota'l'connections between said link, the basel housing and said member and the load and fulcrum` pivots` being in parallelogrammatic relation.

5. In a Weighing srcale,in-combination, a Y

basev housing, a lever fulcrumedwithin said housing-and having a load pivot, a commod-V ity receiver` mounted upon said load. pivot, andalinle positioned between. the commodl ity 'receiver and'saidleve'r andpivotally connectingrsaid commodity receiver with said base housing, the Yaxes of the pivotal connec-V and having .al load'. pivot;V a commodityfre;

Vceiver Vsupported upon said loadpivot, alink;

positioned between said commodity-receiver 4 and-said levera-ndipivotally connecting. said; commodity-receiver with said frame,. the" axes of'jtlie: pivotal connections: of the link between Said commodity-receiver and fra-me;

and the load and fulcrum pivots being; inV parallelogrammatic relation; said'ET lever. halv- Q ing an end extending vlaterally to a pointifb'efyond the edge-of saidi commodityreceiver,

automatic Weighing and indicating` mechanism locatedabove said commodityreceiverv and means connectingeaid automatic Weighing and indicatingmechamsm tofthe-laterally extended -'end1 o' said 1 lever; 

